Air conditioning apparatus



Dec. 9, 1941. H. B. HARTMAN 2,265,367

AIR CONDITIONING APPARATUS Filed Aug. 2, 1940 2 Sheets- Sheet 1 H. B. HARTMAN AIR CONDITIONING APPARATUS 2 Sheets-Sheet 2 Filed Aug. 2, 1940 Y .1 llllllllllllllllll Z 5 I 8 3 a L 6 m .3 a v Patented Dec. 9, 1941 Harry Buxton Hartman, Florence, Mass.

Application August 2,1940, Serial No. 349,786

1 Claim.

This invention relates to air conditioning apparatus, and has for its general object to provide a simple, practical, inexpensive, compact unit embodying a casing, means for circulating air therethrough, means for filtering the circulated air, means for ionizing and ozonizing the circulated air, means for sterilizing the circulated air, means for humidifying the circulated air, means whereby the ionizing and ozonizing, the sterilizing and the humidifying elements of the unit may be op erated either concurrently or selectively and, in

the case of the ionizing and ozonizing elements, means whereby the same may be operated either continuously or periodically, as may be desired in particular instances.

With the foregoing and other objects in view, whlch'wlll become more fully apparent .as the nature of the invention is better understood. the same consists in a unit embodying the novel combination and arrangement of elements as will be hereinafter more fully described, illustrated in the accompanying drawings and defined in the appended claim. I

In the accompanying drawings, wherein is illustrated one practical embodiment of the inven-- tion andwherein like characters of reference denote corresponcling parts in the diflferent views:

Figure 1 is a side elevation of theunit.

Figure 2 is a front elevation of the top portion of the unit.

Figure 3 is a vertical, longitudinal section through the unit.

Figure 4 isa vertical, transverse section through the unit taken approximately on the line 44 of Fig. 3. v

Figure 5 is a vertical, transverse section taken approximately on the line 5-4 oi Fig. 3; and

wardly at its top from the top wall l5 of said casing. Also in said casing A are upper and lower horizontally disposed platforms I1 and 98, re-. spectively, which are located near the top and near the bottom of the partition 16, respectively, and which extend between said partition and the casing front wall I! and also from side to side of saidcasing. Thus, the casing A is divided into a lower compartment a, a top compartment 1), an intermediate compartment 0 in front of thepartition I 6 and a vertically extending air passageway d behind said partition 86, which air passageway is in communication at its bottom and top with the compartments a and b, respectively. Thus, too, the compartments a and b constitute, in effect, bottom and top continuations oi said passageway a as is apparent.

In the lower portion of the front wall 52 of the casing A is an opening i9 for the admission form ll, is employed for this purpose. {This Figure 6 is a diagram of'the electrical elements and circuits of the unit.

Referring to the drawings in detail, A designates a casing which may be corstructed in any suitable manner from any suitable material and which may be oi any suitable shape and may have any suitable dimensions. In the present instance and by way of example said casing is illustrated as being of vertically elongated, rectangular shape and as comprising an angle-iron frame in having a sheet metal covering including side walls blower, when in operation, draws air through the opening 89 into the compartment a, upwardly through the passageway d, into the compartment b and discharges the air through the opening 20.

The openings l9 and 20' preferably are provided with grilles or the like designated as 23.

Disposed in the compartment a, in the path of flow of air circulated through the casing A, is a filter 26 by which the air is filtered immediately upon entering said casing. This filter may be of any suitable type and may be mounted in the compartment or in any suitable manner. In the present instance it is illustrated as comprising a slab of filtering material slidabiy mounted in upp r and lower channel members 25 fixed within the compartment a. whereby it may readily be removed for cleaning or replacement purposes through a doorway 26 in one of the casing side walls which normally is closed by a suitable door 2?.

Also disposed in the compartment a, behind the filter 24, is one or more tubes 28 by means of which air passing through said compartment may be ionized and ozonized. In the present instance three of these tubes, disposed horizontally and extending transversely of the compartment spaced from their-bases by a bracket 30 rising way 25 and their operation may be observed forth the rays'emitted by said tubes. In the ductors between the motor 22 and the trans- 2' a in vertically spaced apart relationship, are illustrated, the same being mounted at their bases in suitable sockets 23 at one side of the compartment a, and being supported at points suitably from the bottom wall H of the casing A. Said tubes, in respect to which no novelty per se is claimed, may be of any known or suitable type.

Access to said tubes is afforded through the doorthrough a suitable window 3| provided, for ex ample, in the door 21...

Disposed in the passageway d is one or more ultra-violet ray tubes 32 by means of which air passing through said passageway may be sterilized. In the present instance three of these tubes, disposed vertically. in laterally spaced apart relationship are illustrated, same .being supported at their tops and bottoms in suitable sockets or receiverssuitably' mounted in-the casing A. To improve the functioning of es'e tubes the walls defining the passageway 2 pre erablyare provided with suitable linings which prevent absorption of light and reflect back and rear wall of the casing A is a doorway 33 which affords access to the tubes 32 and which normallyis closed by a suitable door 34, while-in' one {of the side 'walls of said casing is a window 35 through which the functioningof said tubes 34 8 may be observed.

Obviously it is not necessary that the tubes 28 and 32 be disposed in the compartment 1: and the passageway d, respectively. 'On the contrary, said tubes may be disposed at any other-suitformer 48.

" ondary side of which is connected with the tubes regulating the current flow to the transformer able locations in the path-of air circulated -'at its inner end and having its inner end portion inclined with respect to its outer end portion to provide a bailie against which water supplied by the pipe 36 strikes and is atomized prior 1 to being delivered into the compartment b. Provided at a suitable point in the path of air circulated through the casing A is a humidostat 39 for controlling operation of thevalve 31.

Inthe compartment c is .mounted a transformer 48 through which current is supplied to' the tubes 28; a second transformer 4| through which current is supplied to the tubes 32; fuses 42 for the electrical circuits of the unit, and a clock 43 for actuating switch means to periodically open and close the circuit of the tubes 28.

Referring now toFig. 6 of the drawings which diagrammatically illustrates the electrical circults of the unit, 43 and 44 designate current 6 supply conductors which lead to the motor 22 and, beyond said'motonto the primary side; of

' the transformer 48 the secondaryside of which is connected to the tubes 32. In one of said conformer 48, is a suitable switch 45 whereby the transformer circuit may be opened or closed to render the tubes 32 active or inactive without disturbing the motor circuit. Also in one of said of power, is a switch 48 whereby the motor and consequently the blower may be started and stopped at will.

Branches 41 and 48 of the conductors 43andg 44 lead to the water control valve 31 and the humidostat 38, respectively, and another conductor 48 connects said valve with said humidostat whereby the former is under the control of the -latter. In one of the branch conductors 41 or 48 is a switch 58 whereby operation of the humidifying means may be controlled without affecting operationof the motor 22, or of the trans- Other branches 5| and 43 and 44 lead to one side of the periodically opened and closed switch of the clock 43 and continuations 5|, 52' of these branches lead to the primary side of the transformer 4| the sec- 28. In the continuation 5| is a rheostat 53 for 4|. Also in the continuation 5| is a switch 54 :-for opening and closing the circuit of the transformer 4| as controlled by the clock operated switch. 4

Connecting the conductor 5| with the branch conductor 5| is a conductor 55 in which is a switch 56, while connecting the conductor 52' with'the conductor 44 is a conductor 56'. Thus, by opening the switch 56 and closing the switch 54 the tubes 28 will be periodically operated by the clock-operated switch. Onthe other hand,

by opening the switch 54 and closing the switch 55 the tubes 28 obviously will be-continuously, operated. In either case" the-rheostat 53 is effective to regulate the intensity of the current flow to said tubes 28. Safety fuses 42 may be interposed at any desired points in the different circuits.

From the foregoing it will be apparent that I the tubes 28 and 32 and the humidifying means may be operated concurrently or selectively while the blower 2| is being operated, and that. in the case of the tubes 28, same may be operated either continuously or periodically under the control of the clock-operated switch to efiect either continuous or periodic ionization of air circulated through the unit as may be desired in particular instances. 7

When the various elements of the unit are in operation, the blower 2| serves to circulate air through the casing A, thefilter 24 serves to remove foreign matter from the air, the tubes 28 serve to ionize and ozonize the air, and the tubes 32 serve to sterilize the air.. g

The device is simple, compact, highly efficient in operation and ready access is afforded to all v of the parts thereof for replacement or repair Without further description it is thought that the features and advantages of the invention will be readily apparent to those skilled in the art, and it will of course be understoodthat changes in the form, proportion and minor details of construction may be resorted to, without departing from the spirit of the invention and scope of the appended claim.

I claim:

Air conditioning apparatuscomprising a casing having an air inlet opening in its lower front 1 portion and an air outlet opening in its top, a

conductors, between the motor 22 and the sou ce vertical transverse partition in said casing spaced forwardly from the back thereof to provide a passageway for air and a'space to accommodate air sterilizing means, a horizontal platform above 52 of the conductors,

the bottom oi said casing extending from said partition to the front of said casing to provide a compartment in the bottom 0! said casing to accommodate air filtering means and air ionizing and ozonizing means, a second platform. above said first mentioned platform extending from said partition to the front of said casing to provide an upper chamber in said casing to accommodate air humidifying means and means for circulating air through said casing and also to provide a closed intermediate compartment in 19 opening.

said casing to accommodate controls for the air sterilizing, ionizing, ozonizing, and humidityinz and circulating means, the top of said partition being disposed below the top of said casing so that said air passageway is in communication with said upper compartmenm'and means for circulating air from said inlet opening through said lower compartment and said passageway and said upper compartment to said air outlet HARRY BUXTON HARTMAN. 

